<template>
    <div class="app">
      <h1>你好啊！</h1>
    </div>
  </template>
  
  <script lang="ts">
    export default {
      name:'App' //组件名
    }
  </script>
  
  <style>
    .app {
      background-color: #ddd;
      box-shadow: 0 0 10px;
      border-radius: 10px;
      padding: 20px;
    }
  </style>